2 /************************************************************************
3 * Mailer v0.2.1-FINAL Start: 10/27/2009 *
4 * =================== Last change: 10/27/2009 *
6 * -------------------------------------------------------------------- *
7 * File : filter-functions.php *
8 * -------------------------------------------------------------------- *
9 * Short description : Functions for filter system *
10 * -------------------------------------------------------------------- *
11 * Kurzbeschreibung : Funktionen fuer Filter-System *
12 * -------------------------------------------------------------------- *
15 * $Tag:: 0.2.1-FINAL $ *
17 * -------------------------------------------------------------------- *
18 * Copyright (c) 2003 - 2009 by Roland Haeder *
19 * Copyright (c) 2009 - 2011 by Mailer Developer Team *
20 * For more information visit: http://www.mxchange.org *
22 * This program is free software; you can redistribute it and/or modify *
23 * it under the terms of the GNU General Public License as published by *
24 * the Free Software Foundation; either version 2 of the License, or *
25 * (at your option) any later version. *
27 * This program is distributed in the hope that it will be useful, *
28 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
30 * GNU General Public License for more details. *
32 * You should have received a copy of the GNU General Public License *
33 * along with this program; if not, write to the Free Software *
34 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *
36 ************************************************************************/
38 // Some security stuff...
39 if (!defined('__SECURITY')) {
43 // Init "generic filter system"
44 function initFilterSystem () {
45 // Is the filter already initialized?
46 if (isset($GLOBALS['filter_init'])) {
48 debug_report_bug(__FUNCTION__, __LINE__, 'Filter system already initialized.');
51 // Load all saved filers if sql_patches is updated
52 if ((isset($GLOBALS['cache_array']['filter']['filter_name'])) && (!isset($GLOBALS['cache_array']['filter']['chains']))) {
53 // Prepare filter array
56 // Mark it as initialized
57 $GLOBALS['filter_init'] = true;
58 } elseif ((!isInstallationPhase()) && (isExtensionInstalledAndNewer('sql_patches', '0.5.9'))) {
61 if (isExtensionINstalledAndNewer('sql_patches', '0.6.0')) {
62 $add = ", `filter_counter`";
66 $result = SQL_QUERY('SELECT
67 `filter_name`,`filter_function`,`filter_active`' . $add . '
69 `{?_MYSQL_PREFIX?}_filters`
71 `filter_id` ASC', __FUNCTION__, __LINE__);
74 if (!SQL_HASZERONUMS($result)) {
76 while ($filterArray = SQL_FETCHARRAY($result)) {
77 // Get filter name and function
78 $filterName = $filterArray['filter_name'];
79 $filterFunction = $filterArray['filter_function'];
81 // Set counter to default
82 $GLOBALS['cache_array']['filter']['counter'][$filterName][$filterFunction] = '0';
84 // Mark this filter as loaded (from database)
85 $GLOBALS['cache_array']['filter']['loaded'][$filterName][$filterFunction] = true;
88 $GLOBALS['cache_array']['filter']['chains'][$filterName][$filterFunction] = $filterArray['filter_active'];
90 // Is the array element for counter there?
91 if (isset($filterArray['filter_counter'])) {
92 // Then use this value!
93 $GLOBALS['cache_array']['filter']['counter'][$filterName][$filterFunction] = $filterArray['filter_counter'];
99 SQL_FREERESULT($result);
103 registerFilter('init', 'LOAD_CONFIGURATION');
104 registerFilter('init', 'INIT_RANDOMIZER');
105 registerFilter('init', 'LOAD_RUNTIME_INCLUDES');
106 registerFilter('init', 'INIT_EXTENSIONS');
107 registerFilter('init', 'SET_CURRENT_DATE');
108 registerFilter('init', 'INIT_RANDOM_NUMBER');
109 registerFilter('init', 'CHECK_REPOSITORY_REVISION');
110 registerFilter('init', 'RUN_HOURLY_RESET');
111 registerFilter('init', 'RUN_DAILY_RESET');
112 registerFilter('init', 'TRIGGER_SENDING_POOL');
113 registerFilter('init', 'DETERMINE_USERNAME');
114 registerFilter('init', 'DETERMINE_WHAT_ACTION');
115 registerFilter('init', 'COUNT_MODULE');
116 registerFilter('init', 'UPDATE_LOGIN_DATA');
117 registerFilter('init', 'ACTIVATE_EXCHANGE');
119 // Page headers - pre-filter (normally, you want to register here)
120 registerFilter('pre_page_header', 'LOAD_PAGE_HEADER');
122 // Page headers - post-filter (normally, you don't want to register here)
123 // ------------------- LAST FILTER FOR THIS CHAIN! ------------------------
124 registerFilter('post_page_header', 'FINISH_PAGE_HEADER');
125 // ------------------- LAST FILTER FOR THIS CHAIN! ------------------------
127 // 'You are here' navigation - post filter
128 registerFilter('post_youhere_line', 'CALL_HANDLER_LOGIN_FAILTURES');
130 // Filters for pre-extension-registration
131 registerFilter('pre_extension_installed', 'RUN_SQLS');
133 // Filters for post-extension-registration
134 registerFilter('post_extension_installed', 'AUTO_ACTIVATE_EXTENSION');
135 registerFilter('post_extension_installed', 'SOLVE_TASK');
136 registerFilter('post_extension_installed', 'LOAD_INCLUDES');
137 registerFilter('post_extension_installed', 'REMOVE_UPDATES');
138 registerFilter('post_extension_installed', 'EXTENSION_MARK_INSTALLED');
141 registerFilter('solve_task', 'SOLVE_TASK');
143 // Loading includes in general
144 registerFilter('load_includes', 'LOAD_INCLUDES');
147 registerFilter('run_sqls', 'RUN_SQLS');
150 registerFilter('check_admin_acl', 'CHECK_ADMIN_ACL');
152 // Register shutdown filters
153 registerFilter('shutdown', 'FLUSH_FILTERS');
154 registerFilter('shutdown', 'FLUSH_STATS');
155 registerFilter('shutdown', 'FLUSH_TEMPLATE_CACHE');
156 registerFilter('shutdown', 'FLUSH_OUTPUT');
159 registerFilter('compile_code', 'COMPILE_CONFIG');
160 registerFilter('compile_code', 'COMPILE_EXPRESSION_CODE');
162 // Generic extension update filters
163 registerFilter('extension_update', 'UPDATE_EXTENSION_DATA');
165 // Do hourly reset stuff, keep this entry first in this chain:
166 registerFilter('hourly', 'RUN_HOURLY_INCLUDES');
168 // Do reset stuff, keep this entry first in this chain:
169 registerFilter('reset', 'RUN_RESET_INCLUDES');
172 registerFilter('extension_remove', 'REMOVE_EXTENSION');
174 // Exclude some users
175 registerFilter('exclude_users', 'HTML_INCLUDE_USERS');
177 // Handling of fatal errors
178 registerFilter('handle_fatal_errors', 'HANDLE_FATAL_ERRORS');
180 // Page footer filters
181 registerFilter('page_footer', 'HANDLE_FATAL_ERRORS');
182 registerFilter('page_footer', 'DISPLAY_COPYRIGHT');
183 registerFilter('page_footer', 'DISPLAY_PARSING_TIME');
185 // Member login check. Always keep FETCH_USER_DATA as first entry!
186 registerFilter('member_login_check', 'FETCH_USER_DATA');
189 registerFilter('do_admin_login_done', 'DO_LOGIN_ADMIN');
192 // "Registers" a new filter function
193 function registerFilter ($filterName, $filterFunction, $silentAbort = true, $force = false, $dry_run = false) {
194 //* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'ENTRY: filterName=' . $filterName . ',filterFunction=' . $filterFunction . ' - ENTERED!');
196 // Extend the filter function name
197 $filterFunction = sprintf("FILTER_%s", strtoupper($filterFunction));
199 // Is that filter already there?
200 if ((isset($GLOBALS['cache_array']['filter']['chains'][$filterName][$filterFunction])) && ($force === false)) {
201 // In installation phase we always want to abort
202 if (($silentAbort === false) || (isInstallationPhase())) {
204 debug_report_bug(__FUNCTION__, __LINE__, sprintf("Filter chain %s has already filter function %s registered!", $filterName, $filterFunction));
212 if ($dry_run === false) {
213 // Is the function there?
214 if (!function_exists($filterFunction)) {
216 addFatalMessage(__FUNCTION__, __LINE__, sprintf("Filter function %s could not be added to filter chain %s.", $filterFunction, $filterName));
220 // Simply add it to the array
221 //* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'REGISTER: filterName=' . $filterName . ',filterFunction=' . $filterFunction);
222 $GLOBALS['cache_array']['filter']['chains'][$filterName][$filterFunction] = 'A';
223 $GLOBALS['cache_array']['filter']['counter'][$filterName][$filterFunction] = '0';
226 //* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'ENTRY: filterName=' . $filterName . ',filterFunction=' . $filterFunction . ' - EXIT!');
229 // "Unregisters" a filter from the given chain
230 function unregisterFilter ($F, $L, $filterName, $filterFunction, $force = false, $dry_run = false) {
231 //* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'F=' . $F . ',L=' . $L . ',filterName=' . $filterName . ',filterFunction=' . $filterFunction . ',force=' . intval($force) . ',dry_run=' . intval($dry_run) . ' - ENTERED!');
233 // Extend the filter function name only if not loaded from database
234 if (!isset($GLOBALS['cache_array']['filter']['loaded'][$filterName][$filterFunction])) {
235 $filterFunction = sprintf("FILTER_%s", strtoupper($filterFunction));
238 // Is that filter there?
239 if ((!isset($GLOBALS['cache_array']['filter']['chains'][$filterName][$filterFunction])) && ($force === false)) {
240 // Not found, so abort here
241 addFatalMessage(__FUNCTION__, __LINE__, sprintf(getMessage('FILTER_FAILED_NOT_REMOVED'), $filterFunction, $filterName));
245 // Shall we remove? (default, not while just showing an extension removal)
246 if ($dry_run === false) {
247 // Mark for filter removal
248 //* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'F=' . $F . ',L=' . $L . ',filterName=' . $filterName . ',filterFunction=' . $filterFunction . ' - REMOVE!');
249 $GLOBALS['cache_array']['filter']['chains'][$filterName][$filterFunction] = 'R';
252 //* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'F=' . $F . ',L=' . $L . ',filterName=' . $filterName . ',filterFunction=' . $filterFunction . ',force=' . intval($force) . ',dry_run=' . intval($dry_run) . ' - EXIT!');
255 // "Runs" the given filters, filterData is optional and can be any type of data
256 function runFilterChain ($filterName, $filterData = null) {
257 //* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'filterName=' . $filterName . ',filterData[]=' . gettype($filterData) . ' - ENTERED!');
259 // Is that filter chain there?
260 if (!isset($GLOBALS['cache_array']['filter']['chains'][$filterName])) {
261 // Log not found filters in debug-mode
262 if (isDebugModeEnabled()) {
264 logDebugMessage(__FUNCTION__, __LINE__, 'Filter chain ' . $filterName . ' not found.');
267 // Abort here and return content
271 // Default return value
272 $returnValue = $filterData;
274 // Then run all filters
275 foreach ($GLOBALS['cache_array']['filter']['chains'][$filterName] as $filterFunction => $active) {
277 //* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'Running: name=' . $filterName . ',func=' . $filterFunction . ',active=' . $active);
279 // Is the filter active or newly added??
280 if (($active == 'Y') || ($active == 'A') || ((in_array($filterName, array('shutdown','extension_remove','post_extension_run_sql'))) && ($active == 'R'))) {
281 // Is this filter there?
282 if (!function_exists($filterFunction)) {
284 unregisterFilter(__FUNCTION__, __LINE__, $filterName, $filterFunction);
290 // Call the filter chain
291 //* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, $filterName . '/' . $filterFunction . ',[]=' . gettype($returnValue));
292 $returnValue = call_user_func_array($filterFunction, array($returnValue));
294 // Update usage counter
295 countFilterUsage($filterName, $filterFunction);
296 } elseif (isDebugModeEnabled()) {
298 logDebugMessage(__FUNCTION__, __LINE__, 'Skipped: name=' . $filterName . ',func=' . $filterFunction . ',active=' . $active);
302 // Return the filtered content
303 //* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'filterName=' . $filterName . ',filterData[]=' . gettype($filterData) . ',returnValue[]=' . gettype($returnValue) . ' - EXIT!');
307 // Count the filter usage
308 function countFilterUsage ($filterName, $filterFunction) {
310 if (isset($GLOBALS['cache_array']['filter']['counter'][$filterName][$filterFunction])) {
311 // Yes, then increase
312 $GLOBALS['cache_array']['filter']['counter'][$filterName][$filterFunction]++;
315 $GLOBALS['cache_array']['filter']['counter'][$filterName][$filterFunction] = 1;
319 // Prepares the filter array for usage
320 function prepareFilterArray () {
321 // Abort here if array is absend (e.g. not cached)
322 if (!isset($GLOBALS['cache_array']['filter']['filter_name'])) {
328 $filterArray = array(
334 // Found in cache so rewrite the array
335 foreach ($GLOBALS['cache_array']['filter']['filter_name'] as $idx => $filterName) {
336 // Get filter function
337 $filterFunction = $GLOBALS['cache_array']['filter']['filter_function'][$idx];
339 // Add the element with mapped index
340 $filterArray['counter'][$filterName][$filterFunction] = $GLOBALS['cache_array']['filter']['filter_counter'][$idx];
341 $filterArray['loaded'][$filterName][$filterFunction] = true;
342 $filterArray['chains'][$filterName][$filterFunction] = $GLOBALS['cache_array']['filter']['filter_active'][$idx];
346 $GLOBALS['cache_array']['filter'] = $filterArray;
349 // Loads filter for given extension if present. This function will silently
350 // ignore absent filter files.
351 function loadExtensionFilters ($ext_name) {
352 // Do we have cache entry?
353 if (!isset($GLOBALS[__FUNCTION__][$ext_name])) {
354 // Default is not found
355 $GLOBALS[__FUNCTION__][$ext_name] = false;
357 // Construct include file name
358 $incFileName = sprintf("inc/filter/%s_filter.php", $ext_name);
360 // Is the include file readable?
361 if (isIncludeReadable($incFileName)) {
362 // Load the include file
363 loadIncludeOnce($incFileName);
365 // Mark the file as loaded
366 $GLOBALS[__FUNCTION__][$ext_name] = true;
367 } elseif (isDebugModeEnabled()) {
369 logDebugMessage(__FUNCTION__, __LINE__, 'Include file ' . $incFileName . ' for extension ' . $ext_name . ' is missing.');